Switch



March 5, 1940. c. F. 'rHoMPscN 2,192,211

swx'rcn l Original Filed Aprily 29, 19.56 '7 Sheets-Sheet l A a? 2. f /7umg/1% March 5, 1940. c. F. 'rHoMlPsoN AswITcH Original Filed April 29,1936 7 Sheets-Sheet 2 'nu l Il @fad/@ZA March 5 1940- F. THOMPSON2,192,211

SWITCH Original Filed April 29, 1936 7 Sheets-Sheet 3 :PIET- lf fic:Elia- J3 :fic-r..

IN1/EN TOR.

Y Q @M7 ATTORNEY March 5, 1940. c. F. THOMPSON 2,192,211

v SWITCH Original Filed April 29, 1936 '7 Sheets-Sheet 4 y: fw@

f 109 g INVENToR.

BY 6 W? l im March 5, 1940. c. F. THOMPSON SWITCH original Filed April29, 195s 7 sheets-sheet-s RECORDING MECHRNISM INDICATOR BOARD 1H? 1:21

PAGE BOARD March 5, 1940.. c. F. THOMPSON 2,192,211

i original Filed April "29, 1956 'r 'sheets-sheet s rE-@56 "1mi- 57 -T-oo 58 25 l :FIT-.40 59 mi... Si

:I 42 INVENTOR.v

BY Y

AToRNEY Mardi 5f 1940- c. F. THoMPsoN 2,192,211

SWITCH Original Filed April 29, 19156 7 Sheets-Sheet 7 INVENToR.@45u/:fm 52 :56am/ww,

ATTORNEY `:Patented Mar. 5, 1940 UNITED STATES PATENT OFFICE ApplicationApril 29,

193e, serial No. '11,039

Renewed November 28, 1938 12 Claims.

My invention relates broadly to selective control devices and moreparticularly to an electric switch ior multiple circuit operation.

Among the objects of the present invention are: to provide a switch oithe pivoted lever type so that it may be covered with a standard switchplate and bc installed in a standard switch box; 'to provide a switch oigreatest simplicity and reliability, in which all parts are designed forcommercial production and suitable to be stamped or die cast; to providea switch of open circuit construction, so that it will not heat itselfii left turned on, and so cause damage to itself or the urniture; toprovide a switch ofV non-metallic exterior, so that a user cannot beshocked thereirom; and to provide a switch inexpensive to build andinstall, so that it and its (zo-related devices can be sold or leased onreasonable terms. While the switch of my invention is designed primarilyfor voting purposes, I do not limit its usefulness to this field aloneas many needs may arise for remotely controlled multiple duty switchesin other elds which J would nd this device particularly appropriate. ci@1 attain the above objects by mechanism illustrated in the accompanyingdrawings, in which-.-

Fig. l represents a top view ol my switch, which is covered with astandard switch plate of insulation or other suitable material suitablyengraved.

Fig. 2 shows a top View oi` my switch with the cover plate removed.

Fig. 3 discloses a sectional View of my switch on lines zr. I, of Fig.1; and on lines zr, of Fig. 2.

Fig. 4 is a perspective view of the electrical contactors used in myswitch.

Fig. 5 shows a top view of the top magnet plate.

Fig. 6 shows a side sectionalview of the top magnet plate on lines o, o,of Fig. 5.

Fig. 7 is a top view of the magnet yoke.

Fig. 8 is a side sectional view of the magnet yoke on lines y, y. ofFig. 7.

Fig. 9 shows an insulating washer.

Fig. l0 shows a top view of the magnet spool.-

(ci. aim-1M) Fig. shows a side sectional view of the primary controlassembly on lines byb, of Fig. 13.

Fig. 16 represents a side sectional view of the primary control assemblyon lines c, c, of Fig. 13.

Fig. 17 shows a side sectional view of the pri-- mary control assemblyon lines d, d, of Fig. 13.

Fig. 18 is a side view of the dependent secondary control assembly.

Fig. 19 is a side sectional View of the secondary control assembly onlines lc, 7c, of Fig. 18.

Fig. 2O is a side sectional view oi the secondary control assembly onlines j, of 18.

Fig. 21 is a side sectional view of the secondary control assembly onlines Q, g, of Fig. 18.

22 is a side sectional-view of the secondary control assembly on linesh, h, of Fig. 18.

Fig. 23 represents a side view of the frame of the secondary controlassembly.

Fig. 24 represents the double centering arm.

Fig. 25 represents the single centering arm.

Fig. 26 shows a side View of the yjournal used to support the primaryand secondary control assemblies.

f Fig. 27 is an end sectional view oi the journal on lines w, w, of Fig.26.

Fig. 28 shows the spring used in the primary and secondary controlassemblies.

Fig. 29 shows the contact springs used in the primary and secondarycontrol assemblies.

Fig. 30 is an end View partly in cross-section.' of the switch housingi, with primary and secondary control and magnet assemblies applied.

Fig. 31 is an end View shown more completely in cross-section, of theswitch housing l, with primary and secondary control and magnetassemblies applied. y

Fig. 32 is a schematic electrical diagram of my switch employed as avoting unit.

Fig. 33 is a view of a lock-and-key type of top that may be used with myswitch. f

Fig. 34 is a view or" the lock and key mechanism taken on line X-X ofFig. 33.

Fig. 35 is a view taken on line Y-Y of Fig. 33.

Fig. 36 is a plan vview of the insulated housing of the switch.

Fig. 37 is a side elevational view of the insu' lated housing and theoperating solenoid associated therewith.

Fig. 38 is a vertical sectional view on line 38-38 of Fig. 36 withcertain of the parts indicated in side elevation. y

Fig. 39 is a vertical sectional View on line 39-39 of Fig. 36.

Fig. 40 is a horizontal sectional View taken substantially on line 40-40of Fig. 38.

Fig. 41 is a horizontal sectional view taken substantially on line 4I-4Iof Fig. 38.

Fig. 42 is a horizontal sectional view taken substantially on line 42-42of Fig. 38.

Fig. 43 is a vertical sectional view partially in side elevation showingthe parts of the switch enlarged and moved to one actuated position andindicating the lever actuated frame adapted to be shifted back toneutral position while the dependent frame is locked in the actuatedposition.

Fig. 44 indicates the action which takes place when the lever actuatedframe is initially shifted toward the actuated position of Fig. 43 whilethe dependent frame is locked in neutral position.

Fig. 45 is a vertical sectional view showing the parts of the switchmoved to the other actuated -position and indicating the lever actuatedframe adapted to be shifted back to neutral position While the dependentframe is locked in actuated position.

Fig. 46 indicates the action which takes place when the lever actuatedframe is initially shifted towards the other actuated position of Fig.45 while the dependent frame is locked in neutral position.

Similar numerals refer throughout the several views.

'I'he device of my invention consists of a switch housing I, preferablyof insulation, designed to be covered with a standard switch plate 2,suitably engraved, and designed also to be contained Within a standardsteel switch-box 3. Supporting ears 4 and 5, are attached to housing I,by screws 6 and 1; and the said supporting ears are attached to steelswitch box 3, by screws 8 and 9. Switch plate 2, is fastened to ears 4and 5, by screws I and II, which preferably have insulated heads. Thisis the same standardized construction found in practically all switchestoday. These details can be seen in Fig. 3.

Housing I contains eight electrical contactors I2, I3, I4, I5, I6, I1,I8 and I9, all of which are held in place with screws having their headsrecessed into the bottom of housing I, and which are threaded into holes20, 2l, 22, 23, 24, 25, 26

to similar parts and 21 of said contactors. Contactors I2 to I9inclusive, are also equipped with wire holding screws 28, 29, 30, 3|,32, 33, 34 and 35. In addition to the eight contactors thus farenumerated, one additional contacter 36, is molded in the bottom of therecess in housing I. Fig. 4 shows all the above mentioned contactors inperspective.

A solenoid magnet assembly is attached to the bottom of housing I, byscrews 6 and 1. Said assembly consists ofthe top magnet plate 31, shownin Figs. and 6 and elsewhere; magnet yoke 38, shown in Figs. 7 and 8 andelsewhere; the molded magnet spool 39, which contains studs 39a and3921, shown in Figs. 10 and 11 and elsewhere; the magnet covering tube40, shown in Fig. 12 and elsewhere; the magnet core 4I, shown in Fig. 30and elsewhere, which is riveted permanently in yoke 38; the spring 42;and the plunger 43 which carries a shank 43a, shown in Fig. 3 andelsewhere. A thin brass shell 44 is placed in-side magnet spool 39 toreduce wear, and the winding on spool 39 is indicated at 45, as shown inFig. 30 and elsewhere.

The lower slotted ends of the contactors I1 and 36, project through thebottom of housing I through rectangular holes 31e and 31d in top magnetplate 31; through rectangular holes 46c and 46d in insulating washer 46;and terminate in the two recesses in the top of the'magnet cover tube40,-where the said slots of contactors I1 and 36 constitute solderinglugs for the leads from Winding 45 on the spool 39. It will be notedthat studs 39a and 39h of the magnet spool 39, will project throughholes 46a and 4Gb in insulator 46 (Fig. 9), and through holes 31a and31h in the top magnet plate 31 (Fig. 5), preventing the magnet spoolfrom turning. Since rectangular holes 31e and 31d in the top magnetplate 31 are much larger than corresponding holes 46c and 46d inwasher46, and these parts are pinned together by studs 39a and 39h of themagnet spool 39, the slotted lower ends of contactors I1 and 36 cannotcome in contact with the sides of holes 31C and 31d in the top magnetplate 31.

When magnet winding 45 is energized through contactors I1 and 36, themagnet plunger 43 and its shank 43a, will be pulled downward towards'magnet core 4I, which is the only magnetic action taking place in theunit.

To provide a bearing for the shank 43a of magnet core 43, as it passesthrough the bottom of housing l, and to provide a xed centering stop forthe primary and secondary control assemblies about to be described, asmall metal block 41, is molded into the center of the bottom of thehousing I, or riveted therein as illustrated.

A shaft hole 48 is located in both side walls of the housing I. A shaft49 is located in said hole. Pivoted on the shaft 49, is the leveractuated assembly shown in Fig. 13, which provides a mounting forprimary circuit-closing means, and the dependent assembly shown in Fig.18, which provides a mounting for secondary circuit-closing means. Thesetwo assemblies will be analyzed separately. On Figs. 30 and 31 andelsewhere they are shown together on the shaft 49 and contained in thehousing I.

A journal 50, shown in Figs. 26 and 27, containing bearing hole 5I,suitable for the passage of the shaft 49, has an exterior surfaceconsisting of three round shoulders 50a, 5|lb, 50c, and a squareshoulder 50d. Upon one such journal the lever actuated assembly shown inFig. 13 is constructed; and upon a second such journal the dependentassembly shown in Fig. 18 is constructed. Fig. 31 shows a journal 5D inoutline, supporting the various parts making up the lever actuatedassembly; and shows also a second journal 50 in sectional form,supporting the various parts that make up the dependent assembly.

vReferring to Fig. 13, we can start analysis of the lever actuatedprimary control assembly. Sectional view d, d, of Fig. 13 is disclosedin Fig. 17, wherein we nd a pair of contact springs such as are shown at52 in Fig. 29. Said pair of contact springs in Fig. 17 are mounted onsquare shoulder 50d of journal 50, but insulated therefrom by squareinsulator 53. Fig. 13 further shows two insulating washers 54 and 55,one on either side of the pair of contact springs. This construction isalso shown very clearly under the same numbers in Fig. 31. also show anadditional and larger insulator 56 mounted on journal shoulder 50d, anddesigned to further insulate contact springs 52 from other metallicparts. The lever handle 51, preferably made of insulation, is riveted byrivets 58, 59 and 60 to frame 6I, which is shown in Figs. 14 and 31; andsection lines c, C, of Fig. 13 disclose in Fig. 16 a clear view of theshape of frame 6I The frame 6I, as shown in Fig. 16, is mounted on theshoulder 50d, of the journal 50; and at the bottom of the frame 6I,there is a bent over projection Sla.

Figs. 13 and 31 which is also very clearly shown in Figs. 13 and 31. Theparious parts so far described, that is. the frame 6| with the handle 51riveted thereto, and the pair of contact springs 52, 52, with theirinsulators 53, 54, 55,and 56, are firmly held on the square shoulder 50dof the journal 50, by a collar 62, best shown in Fig. 31. Collar 62 ispressed or riveted onto the shoulder 50c of the journal 50. On theshoulder 50D of the journal 50 is placed a centering arm shown at 63T inFig. 25. which possesses a single stop 63a. A spring such as shown at64T in Fig. 28 is next placed 4on shoulder 50h of the journal 50. Thesection lines lb, b, in Fig. 13 disclose in Fig. 15 the position of thecentering arm 63T and spring 64T very clearly. On the shoulder 50a ofthe journal 5U is placed the centering arm 35T shown in Fig.

24, which possesses two stops e561, and 35h. The section lines a, moiFig. "i3 disclose in Fig. 14 a clear view of centering arms 33T and 55T,assembled on the journal 50, with the spring GIBT caus ing stops @3a and65h tc be held with tension on projection tia oi the i'rarne Cil.

The dependent secondary control assembly shown in Fig. 18 is similar tothe lever actuated assembly just explained, except that a frame tifa?shown in F'ig. 23, is substituted for the trame (il.

Op. the square shoulder alle! of a second journal 53, are assembled theirame a pair oi' contact springs similarly insulated by another set ofinsulators 54, 55 and 3,-all oi which are lrmly held on the squareshoulder 53d oi the journal 53 by another collar 32, best shown in Fig.31. Collar il?. is pressed or riveted onto the shoulder iic ci thejournal Section lines l1., h, in Fig. 13 disclose in 22 a centering arm35C mounted on the shoulder @ila of the journal 5&3. Section lines g, g,oi Fig. lil disclose in Eig. 2l the addition of a centering arm 653C andspring 311C to the assembly. Section lines j, j, oi Fig. 13 show in Fig.20 the whole iranie te, mounted on the square shoulder d oi' the journaltil. Section lines lc. ic, of Fig. 13, disclose in ii'ig. 19 a completeside View of the assembly, in which the spring MC causes stop 83a ofcentering arm and the stop @5b of centering arm 65C, to be held withtension on the projection 86a' of the trarne 56.

When the primary control assembly o Fig. i3 and the secondary controlassembly of Fig. 13 are mounted together on the shaft i9 in the housingl, as shown in Fig. 30, it will be observed that the lever actuatedframe projection tia and the dependent frame projection 66a, are nowclamped together by the centering arms 63C and 65C of the dependentassembly, and also by the centering arms 63T and 65T of the leveractuated assembly.

Fig. 3 shows movement of the frame 36 locked by plunger shank 43aresting in the hole 36h of the projection 66a, which means that theentire frame 66 can move only when the plunger shank 13a is withdrawnfrom the hole 66h. Shank 43a, with the actuating solenoid thusconstitutes means for controlling the operation of the secondary controlassembly through engagement with projection 66a.

The normal upright position of the lever handle 51 is maintained by thefact that the stop 65D of the centering arm 85C, and the stop 65h' ofthe centering arm 65T are held in abutment with metal block 41 byaction. of their respective springs. v I

The electrical operation is shown in Fig. 32, and from Fig. 3 a'veryclear View of the mechanical operation can be obtained. Fig. 3omits all of projection 66a, but if the entire assembly weresuperimposed on Fig. 3 the drawing would not be intelligible. Thereforeinto Fig. 19 which shows the secondary control assembly, the metal block41 has been added, which is suiicient to permit a clear understanding ofthe mechanical operation from joint consideration of Figs. 3 and 19.Figs: 3, 19 and 32 are therefore used mainly for description of theoperation, but other views may be referred to il desired.

Fig. 32 shows the switch of my invention employed as a voting unit in aroll call system, and illustrates schematically the circuit connectionsto the electromagnet 45. and from the switch to a page board, anindicator board, and recording mechanism. In Fig. 32, El designates apositive lbattery lead and 66 indicates a negative battery leadcontaining switch 69-10, designed to lock or unlock all secondarycontrol assemblies.

OperatiorL.-Current leaving @l enters any switch through the contactori3 and travels through the secondary control contact springs i whichnormally rest on the contacter i3d, but can get no further until somemovement occurs in the switch. Except when members are actually voting,switch itil-l@ would be open, and when open, as drawn, the circuitthrough the winding of the magnet til would likewise be open, and thesecondary control assembly would be locked against'motion by the magnetplunger shanlr. passing through the hole in theprojection tta. With theframe titi so locked, the handle ill may still be pushed to eitherside', to call a page or give .some other desired signal. l the handlewere pushed to either right or left, the primary control contactspringsti would pick. up current from the contact lith or itis and sendcurrent out of either contacter iii or iii, through the conductor 'l2and page signal to the negative lead t3. 1i desired one oi the twocontacts iii or i3 could be used alone for the page call, and theremaining contact used or some other purpose, such as operating a pagecall buzzer, or incheating on a special board on the speakers desir.

that the member desired recognition from the chair. This extra circuitlil or la might also be used for calling a stenographer. @nce switch isclosed however, to permit a vote to be taken, the page call board, orbuzzer circuit, or recognition board, or stenographers call, or whateversignalling systems might be used from the contacts i3 and i9, would beno longer oper-1 ative, because nothing more than an instantaneous flashof current can pass through the voting unit to the contactors i8 and iiiwith the switch til-13 closed. When operated between votes as anauxiliary signalling system, with the switch 63-13 open, the mechanicaloperation of the voting unit is as follows.

When the handle 51 is pushed to the rightpro jection 6 la moves to theleft carrying the stop 63a of centering arm 63T with it and contractingspring 64T. This motion is arrested when the projection Sla strikes thestop 65a of the centering arm 65T,.the stop 65h of the centering armv65T not being able to move to the left because of its abutment with themetal block 41. In moving to the left the projection Bla will also carrywith it the stop 65h of the centering arm 65C. and therefore move thestop 65a of the same eentering arm until it strikes the projection 66a,which doubly arrests movement, since 66a is locked by 43a. In moving thestop 65h of centering arm 65C to the left, the spring 84C will be titi(ill

contracted, as the far end thereof is attached to the centering arm 63Cwhich is held immovable because its stop 63a is in contact with theprojection 66a, and that is locked by the magnet plunger shank `43apassing through the hole 66h therein. With the projection 66a thuslocked by the shank 43a, both springs 64T and 64C are contracted whenthe handle 51 moves to the right, and when said handle is released saidsprings will furnish the power to return it to center and keep it thereuntil again operated.

Precisely reversed actions take place when the handle 51 is pushed tothe left. Then the projection 6Ia moves to the right `carrying the stop63a of centering arm 63C with it, and contracting the spring 64C. Thismotion is arrested when the projection 6Ia strikes stop 65a of centeringarm 65C,-stop 65h of centering arm 65C not being able to move to theright because of abutment with the metal block 41. In moving to theright, projection 6Ia will also carry with it stop 65h of the centeringarm 65T, and therefore move the stop 65a of the same centering arm untilit strikes the projection 66a, which doubly arrests movement, since 66a.is locked by 43a. In moving the stop 65h of the centering arm 65T to theright, the spring 64T will be contracted, as the far end thereof isattached to the centering arm 63T which is held immovable because itsstop 63a is in contact with the projection 66a, and that is `locked bythe magnet plunger, shank 43a passing through the hole 66h therein. Withframe E6 thus locked by the shank 43a both springs 64T and 64C arecontracted when the handle moves to the left, and when said handle isreleased said springs will furnish the power to return it to center andkeep it there until again operated.

The electrical operation will now be described With the switch 69,-10closed and the voting unit operating strictly as such. A member desiringto vote Aye would push the handle 51 to the left, establishing contactbetween primary control contact springs 52 and the contacter IEc, thuscompleting a circuit from positive contacter I3 to negative battery 68,through the contacter 36 and the magnet 39, whereupon the shank 43a iswithdrawn from the frame 66 which is immediately pulled by action of oneof the springs 64 until the projection 66a lines up again with theprojection 6Ia. The current operating magnet 39 is only of instantduration because as soon as the primary control contact springs 52 touchthe contacter IBc, establishing the circuit, the magnet 39 withdraws theshank 43a from the frame 66 and the dependent assembly, inflying aroundunder action of one of the springs 64 to line up with the lever actuatedassembly, causes the secondary control contact springs 52 to breakcontact from the contactor i6a and open the circuit to the magnet 39.With the circuit to the magnet 39 open, the spring 42 will cause theshank 43a of the magnet plunger to lock the frame 66 with the edge ofthe projection 66a on the side of shank 43a and in this position thesecondary control contact springs 52 hold contact with the contactor I4until released by another or subsequent` impulse of current through themagnet 39. Such an impulse might be received by the magnet 39 any timebefore the switch 69-10 is opened by the member pushing the handle backto center. If the member should wish to release his vote by .pushing thehandle back to center, the primary `control contact springs 52 wouldestablish contact with the contacter Iza, and since the sec-- ondarycon-trol contact springs II are contacting the contactor I2b with an Ayevote registered, the magnet 39 will receive its resetting impulse by thecontactors I3, I2b, I2a and 36. As soon as the magnet 39 receives theimpulse just described, withdrawing the shank 43a from the edge of theprojection 66a, the secondary control contact springs 52 leave thecontacter I2b and frame 66 again lines up with frame 6I, and the magnetcircuit is again open. -If an Aye vote had so been registered asdescribed. and the switch 69-10 thereupon opened to lock all thesecondary control assemblies, the member could not have reset his Ayevote by moving the handle 51 back to center. However the switch 69-10and the switch 1li- 15, both of which would preferably be automaticallycontrolled, would be momentarily closed simultaneously for the purposeof resetting all the voting units at one time, and would do so by thecircuit through the switch 14-15, the conductor 1I, the contacter points|612, I6a and |60, the primary control contact springs 52, the contacter36, magnet 39 and the switch GSI-11D. Switch 14-15 would preferably beequipped `with a separate contact for each voting unit. Switch 69-10could be so equipped if so desired. A Nay vote could be registered fromthis unit by pushing the handle 51 to the right, completing the circuitto the magnet 39 through the contactors I3, I6a, IBb and 36, whereuponthe frame 66 would be released and move to lineup again with frame 6 I,thus breaking the magnet circuit at the contactor I6a, and establishingthe Nay circuit at the contacter I5.

Whenever an Aye circuit is established on the contacter I4, current willpass over the conductor 16 to the recording mechanism, and through theindicator board signal 11 to the negative lead 68. Whenever a Naycircuit is established on the contactor I5, current will pass over theconductor 18 to the recording mechanism and through the indicator boardsignal 19 to the negative lead 68. Whenever the frame 66 is left in itsnormal position a Not-voting circuit would be established to therecording mechanism by contactors I6a, I6b and the conductor 1I. That isto say, a connection may be taken from contactors I6a, iBb, Ic, to anindicating or recording mechanism to show the member not voting. Aconnection may also be taken to an indicating or recording mechanismfrom contactors I2a, I2b and i2c to indicate that the member is voting.

The schematic diagram in Fig. 32 is designed to show operation of thevoting unit itself, and therefore does not show the switchboards or anyother mechanism of a complete votingsystem. By operating the remotelycontrolled reset circuit, governed by the switches 69--10 and 14-15 overthe Not-voting conductor 1I, one wire is saved to each voting unit, thatotherwise would be required for the remotely controlled reset circuit.Since the centering spring and the c'entering arms on the lever actuatedassembly are identical with those on the dependent assembly, but inreversed relationship thereto, a description of the mechanical actionduring casting oi.' an Aye vote is suiiicient. The actions of thecentering sprlngs and the arms are simply reversed in casting a Nayvote, as could be seen when a double description was given of the handlemoving both ways with the voting unit used as an auxiliary l signallingdevice. Mechanical functioning yof the lever actuated and dependentmechanisms when using the voting unit for registering or releasingvotes, will now be described.

When the handle 51 is pushed to the right to register Nay, theprojection Bla moves to the left, carrying the stop 63a of the centeringarm 83T with it, and contracting spring 64T; and in movingl to the leftprojection Gla will also carry with it the stop 65D of the centering arm65C. When the handle 51 has been pushed towards the Nay position, theprimary control contact spring 52 makes `contact with the contactor 1Gb,operating the magnet 39, which releases the i'rarne 5t, whereupon thesecondary control contact springs 52 break circuit to the magnet 35i' atthe contactor ia, which allows the plunger shank 43a to rise and ride onthe bottom of projection tta, provided the handle 51 is operated slowly.i

The position at which the secondary control assembly trips depends uponthe speed at which the handle 51 is moved. If it is moved fast enough itmight be all the way over to its limit oi movement when the secondarycontrol as sembly trips. Ihus when the handle 51 has been moved towardthe Nay position, and the projection (its is released, the secondarycontrol assembly is pushed to the left by the spring 611C exerting apull on the stop 63a of the centering arm 63C. When the handle 51 hasbeen movedl toward the 'Nay position the frame tu is released and springtiri@ becomes efective to line it up with the frame Si. 'When theprojection 55a is released and pushed to the left by the spring WC,actuating the stop tito of the centering arm tt ,-the motion ofprojection 66a towards the leit is arrested by the stop 65h of centeringarm 65C, and also by the stop 63a of centering arm 63T. Continuedpressure to the right on the handle 51, moves the projection tiafurther' to the left, carrying the projection 66a with it, by virtue ofspring 64C holding the projection Gla and the projection 66a together.Projections Sia and 66a travel to the left until they strike the stop85a of the centering arm 65T, which cannot itself move to the leftbecause the projection 65h thereof is abutting the metal block 41. Whenthe projections tia and 66a are stopped by the stop 65a., saidprojections have moved slightly past and entirely clear of the magnetplunger shank 43a. Magnet plunger shank 43a, which in the latter part ofthe movement has been riding on the bottom of the projection $8a,-ispushed upward by the spring 42 until its side surface rises beside theedge of the projection 66a, locking projection 66a in the Nay position.It will be remembered that the spring 64C is holding the projection Glaand the projection 66a together,

hence the handle 51 stays in the Nay position' solely by action of thespring 64C. Meanwhile the spring 64T has been contracted by the stop 63aof centering arm 63T being pushed to the left and locked behind thelocked projection 66a. The voting unit is now in the-mechanicalcondition of registering a Nay vote. It is quite apparent if the magnet39 received another impulse of current at this stage, the magnet plungershank 43a would be drawn down and the frame 66 released; whereupon thespring 64T by actu? ating stop 63a of the centering arm. 63T, wouldrestore the frame 66 and the frame 6I to their normal positions. Whenthe dependent frame 66 is locked in the Nay position and the leveractuated frame is clamped thereto by the spring 64C.

a resetting impulse of current 50 could be obtained by pushing thehandle 51 toits normal position, contracting spring 64C, andestablishing a circuit from the contactor i3 through the secondarycontrol contact springs 52, and the contactor points I2c, I2a, theprimary control contact springs 52 and the contactor 36. Or such aresetting impulse might be obtained by simultaneous4 and momentaryclosing of the switches 69--10 and 14-15 as previously described.

Where use of a lock and key for each device is desired, to preventtampering with the switch,"

I provide a special form of top plate to replace that shown in Fig. 1;Figs. 33, 34, and 35 are views of the lock and key mechanism which Iemploy for this purpose. The switch plate 2 is in this case providedwith a special molding which I have designated at 8D, projectingupwardly from the rear of' plate 2. The molded extension has twoupwardly projecting por tions, between which an angularly shiftableblock iii is pivoted. The block 8| carries a housing portion t? which isspaced to wholly cover the handle 51 of the switch, and to cover theheads ofthe securing screws lil and Ii. The block 8i carrying housing t2therewith, is-shiftable away from the switch plate 2, into the positionshown in dotted lines at 92a in Fig. 35. The housing iii. is shiftablealso into the solid line position, entirely preventing manual movementof the handle till. I provide a lock insertable at at in one side oi themolded extension tti, and held in position by a nut in recess 86. Thelocir B3 has attached to its barrel B1, a lock arm tit, engaging a partoi the movable block iii. The renovable block 8l is pivotally mounted onairis S4, and when the key is inserted in lock 33, so its barrel ll andlock ann are free to move, one may, by catching hold of projection 88,shift the block ci and its attached housing 82, from a position in whichthe housing 82 completely covers the handle 51, to a position in whichthe handie is completely uncovered. The key cannot be removed from locktt? unless housing 82 is completely covering handle 51, and when the keyis removed the bloclr ti and housing 82 is prevented from moving out ofthe solid line position illustrated, by the pins and tumblers of thelock.

The structure illustrated is but one form of Aloci: which I may employ,for other types of locks may be readily substituted for the constructionof lock which I have shown.

In order to fully understand the parts of the housing for the device,reference is made to the several views illustrated in Figs. 36-39. Theseveral parts as heretofore described may be identified from thereference characters as heretofore given. It has been necessary to showseveral horizontal views through the housing as illustrated in Figs. 40,41, 42 in order to make clear the disposition of the several fixedcontactors. 'I'he housing I is provided with suitable recesses la in theexterior surface thereof ,to 'enable wires to be readily brought up tothe contact screws.

In order to explain the several positions of the switch as heretoforedescribed, I have illus- Y the parts of the device in the left actuatedposition, with both lever actuated and dependent frames moved completelyto the left side and locked in that position; although as heretoforeexplained the lever actuated frame is free to be moved tothe neutralposition While the dependent frame is locked in the left actuated polsition.

Fig. 46 illustrates the manner in which the lever actuated frame may beshifted independently of the dependent frame, toward the right actuatedposition, while the dependent frame is locked against movement. Fig. 46is otherwise similar to Fig. 44. With switch 69-10 open further movementin this direction would operate the Page or Recognition Board or othersignal, in the system of Fig. 32, by contact spring 52 contactingcontacto-r i8, which in this View is immediately behind contactor I2C.With switch 69-70 closed said further movement in this direction wouldoperate magnet 3| through contactor |60, releasing the dependent frameto line up with the lever actuated frame, breaking the circuit to magnet3| at contacto-r I 6a. Fig. 45 shows the position of the parts of thedevice in the right actuated position, with both the lever actuated anddependent frames moved completely to the right side and locked in thatposition; although as heretofore explained the lever actuated frame isfree to be moved to the neutral position while the dependent frame islocked in the right actuated position.

I have found the switch of my invention highly practical in itsconstruction and method of operation. It will be seen that the deviceemploys as its basic principle a system of open circuit operation asdistinguished from closed circuit operation heretofore used, and for thefirst time all functions of a switch of this type are controlled by asingle magnet.

While I have described my invention in one of its preferred embodiments,I desire that it be understood that modifications may be made and thatno limitations upon my invention are intended other than may be imposedby the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent of the UnitedStates is as follows:

1. Aswitch comprising a housing, a shaft member extending laterally ofsaid housing` primary manually controlled circuit-closing. means andseparate secondary circuit-closing means journaled on said shaft, saidprimary circuit-closing means being operable at will, means selectivelyinterconnecting said primary and secondary circuit-closing means, andmeans for controlling the operation of the last said means, saidsecondary circuit-closing means being operable or inoperable inaccordance with the operation of said controlling means.

2. A switch as set forth in claim 1 wherein said means for controllingthe operation of the interconnecting means comprises a solenoid having aplunger operatively engageable and disengageable with said secondarycircuit-closing means.

3. A selective control device comprising an lnsulated housing, a shaftmember extending laterally of said housing.- primary manually controlledcircuit-closing means and separate secondary circuit-closing meansjournaled on said shaft, said primary circuit-closing means beingoperable at will, dual spring means interconnecting said primary andsecondary circuit-closing means, and means releasably connected withsaid secondary circuit-closing means for holding said secondarycircuit-closing means in locked position upon operation of said primarycircuit-closing means, one of said spring means being operative uponrelease of the last said means for moving said secondary circuit-closingmeans to coincidence with said primary circuit-closing means.

4. A selective control device as set forth in claim 3 and including astop fixed to said housing, with oppositely tensioned portions of saiddual spring means engageable therewith with both said circuit-closingmeans in normal position, one of said portions remaining in engagementwith said stop at all times whereby said spring means is operable torestore said circuitclosing means to normal position.

5. A selective control device as set forth in claim 3 andv including astop fixed to said housing, with oppositely tensioned portions of saiddual spring means engageable therewith with both said circuit-closingmeans in normal position, one of said portions remaining in engagementwith said stop at all times whereby said spring means is operable torestore said circuitclosing means to normal position, said stop havingan aperture therein and said means releasably connected with saidsecondary circuit-closing means being operative through said aperture.

6. A selective control device as set forth in claimv 3 wherein saidmeans releasably connected with said secondary circuit-closing means isengageable therewith with said secondary means in operated position forlocking said secondary circuit-closing means in operated position.

7. A selective control device comprising a housing, a, shaft mountedtherein, primary manually actuated control means and separate secondarycontrol means journaled on said shaft, said primary control means beingoperable at will, means selectively interconnecting said primary andsecondary control means, and means for controlling the operation of saidinterconnecting means, said secondary control means being operable orinoperable in accordance with the operation of the last said controllingmeans.

8. A selective control device comprising a housing, a shaft mountedtherein, primary manually actuated control means and secondary controlmeans journaled on said shaft, said primary control means being operableat will, dual spring means interconnecting said primary and secondarycontrol means, and means releasably connected with said secondarycontrol means for holding said secondary control means in lockedposition upon operation of said primary control means, one of saidspring means being operative upon release of the last said means formoving said secondary control means to coincidence with said primarycontrol means.

9. An electromagnetically controlled switch comprising a housing, anelectromagnet mounted on said housing, primary circuit control means andsecondary circuit control means supported by said housing, a plunger forsaid electromagnet controlled thereby and releasably engageable withsaid secondary circuit control means, electric circuit means includingsaid electromagnet d and said primary and said secondary circuit controlmeans, manual means for actuating said primary circuit control means forenergizing said electromagnet and releasing said secondary cir-v cuitcontrol means, and spring means tensioned by operation of said manualmeans for actuating said secondary circuit control means fordeenergizing said electromagnet and releasing said plunger, saidsecondary'circuit control means being maintained in actuated position bysaid released plunger.

10. An electromagnetlcally controlled switch as set forth in claim 35,said manual means being operable for moving said primary circuit controlmeans from actuated position for reenerglzing said electromagnet andreleasing said secondary circuit control means, and duplicate springmeans tensioned with the aforesaid spring means for restoring saidsecondarycircuit control means to normal position for deenergizing saidelectromagnet and releasing said plunger, said secondary circuit controlmeans being maintained in normal position upon its return thereto bysaid released plunger.

11. An electromagnetically controlled switch comprising a housing,primary and secondary circuit control means supported by said housing,

an electromagnet and an enclosing shell therefor, a magnetic yoke memberembracing said electromagnet and sald'shell and secured to said housingfor mounting said electromagnet thereon, spring means interconnectingsaid primary and secondary circuit control means, and a plunger for saidelectromagnet `releasably engageable with said secondary circuit controlmeans.

12. A selective control device comprising a housing, primary andsecondary control means supported in said housing, dual spring meansinmary control means in one direction while the other of said springmeans has one portion thereof remaining in engagement with said stop forrestoring both said control means to normal position.

CHARLES F. THOMPSON. 25

CERTIFICATE OF CORRECTION. Patent No. 2,192,211. March 5, 19h0.

` CHARLES F. THOMPSON.

It f is hereby 'certified that error appears in the printedspecification of the a'gove numbered patent requiring correction asfollows: Page 7, line 1l, claim l, for the claim reference numeral "55"read 9; and that the said Letters Patent should be read with thiscorrection therein that the same may conform to the record of the case1n the Patent Office.

Signed and sealed' this 2nd dgy of April, A. D. l9}.|.O.

` Henry van Arsdale, (Sel) l Acting Commissioner of Patients.

CERTIFICATE OF CORRECTION. Patent-No. 2,192,211. Maz-en 5, 191,0.

Y CHARLES F. moMPsoN.

It f is hereby certified that error appears in the printed specificationof the agove numbered patent requiring correction as follows: Page 7,line l1, claim l, for vthe claim reference numeral "55" read 9; and thatthe said Lettera Patent should be read with this correction therein thatthe same may conform' to the record of the case in the Patent Office.

'signed and sealed this 2nd day of April, A. D. 191,0.

` Henry Van Arsdale, (Seal) A Acting Commissioner of Patents.

